PatentNo. Inventor 2008-20061001810.2 A three-phase unified power quality controller without isolation link, and a method and compensation device for dynamic three-phase unbalanced load of ZHANG 200702 1 03873.2. Zhao Guang 20072004 1 0008462.4 dynamic compensator for voltage sag and surge Li Guojie, Sun Yuanzhang 200720061001113.7 based on photovoltaic cells. Li Guojie 20072004 1 0009536.6 Integrated Power Quality and Reactive Power Controller Jiang Xiaohua, He, et al. 2007200510012/98.6 Steady-state Control Method of Current Parallel Voltage Compensator for Superconducting Energy Storage Zhu, Jiang Xiaohua, Ren, Cheng 200720041078143.0 distributed continuous reactive power generator Shen 20072007 1065438, Wang zanji, Yu Xinjie, Su Ling 200703143/kloc-0. Wang Zanji 2007-200710063247.8 A hybrid modulation method applied to three-level high-voltage inverter, Zhao, Yang Zhi, Bai Hua 20061000 Wang Shijing, 200610/659. Jin Nengqiang and Chen Zhenmin 200610012289.4 Magnetic Flux Leakage Detection Method for Large Area Steel Plate Defects Huang Songling, 200603 150349.7 Neutral Point Voltage Balance Method of Three-level Inverter Based on Charge Balance Zhao, Meng Shuo, Liu, 20062004/KLOC. 0068973.5 Identification X A radiator for power devices (utility model) Tang Dongming, Yang Zhi, Qian Shibao,,, Sang Chun, Zhao 200620069537.4 An integrated structure of medium and high voltage three-level inverter (utility model) based on Yang Zhi,, Tang Dongming,,, Wu, Zhuang Rong, Yuan Liqiang 20062006/kloc-0. Tang Dongming and Zhao 200603 1 37633.9 Active Power Filtering Method and System and Source Impedance Decoupling Control Pang Hao and Wang Zanji 200603 102677. X control method and its programmable control system, Rong Jian 2005200510086918.3 solar high-pressure sodium lamp controllers based on single-stage inverter Zhang Qiang, Liu, Zhao, Wulibo and Wang Jian 200502 1 30953. 1 cylindrical two-dimensional coordinate system two-dimensional motion simulator Jiang Xiao. Pu20052005 1 008610.9 Pre-excitation, Zhao, Yuan, Zhang Haitao, 20052005 10086549.8 Automatic generation method of external network equivalent of power system Zhang Boming, Sun Hongbin, Wu Wenchuan and Zhang Haibo 2005200. 0088 JIANG Dong 20052005 10086300.7 Intelligent data acquisition and overvoltage protection system for medium and high voltage power equipment, Zhao, Liu, 20052005 1 009984.1Power network topology error identification method based on mixed state estimation Sun Hongbin, Zhang Boming, Wu Wenchuan, Gao Feng 2000. 0092983 Wang Hao 20052005 10086343.5 Safe Pulse Sealing Method in Medium and High Voltage Three-level Converter Yuan, Cui Zhiliang,,, Yang Zhi, Zhao 20052005 10086299.8 A high-performance optical fiber CAN communication system suitable for strong electromagnetic interference environment Zhang Haitao, Zhao and Qian Shibao 2005. 0088 Wang 20052005 10098527.3 Voltage control methods based on soft partition in power system Sun Hongbin, Zhang Boming, Wu Wenchuan, Guo Qinglai, 200520051001431. 2005020 Shen Kang 2004310061.6 Detection method of active defects caused by stress or fatigue Li, Huang Songling 200420041009718.3, Control method of realizing precise orientation of rotor magnetic field of asynchronous motor by voltage closed loop. X Power transformers Wang, Wang Xiangheng,,, 200401kloc-0/36260.x thyristor switching capacitor distributed trigger control device,, Liu Xiucheng, Zhang Haibo, Wang Zanji 20042004 1 00097 1 8.3 Control method of realizing precise orientation of rotor magnetic field of asynchronous motor by voltage closed loop Lu Haifeng and Qu 2004021KLOC-0/6443.6 A reactive power measurement method based on digital filtering Pang Hao, Mi, Li Dongxia and Wang Zanji 200402 1 16885.7 A digital frequency and phase measurement. Wang Zanji 20040 1 130657.2 relay protection method for distribution network and its relay protection system Dong Xinzhou 20030 1 123977.8 method for detecting surface defects of ferromagnetic materials by using geomagnetic field Li, Huang Songling, Wang, 200301. Signal phase detection method of kloc-0/ state transition sequential logic Pang Hao, Wang Zanji 20030 1 1 Huang Songling, Wang Xiaofeng, Cao 20030 1 1 36252.9 Generation method of power electronic equipment control pulse Pang Hao, Wang Zanji, Liu Xiucheng 2000. 43445.7 Magnetic measurement method of stress distribution Li, Huang Songling, Wang Xiaofeng and Chen Hang 200300 1 35865.0 Three-phase power line 200303 150089.7 A method to reduce switching loss of three-level inverter Meng Shuo and Zhao 200303 150349.7 Based on charge balance. Pattern conversion template and its data processing control method 200301120138. X transient traveling wave protection tester and its test method 200302238026.4 Portable stress distribution tester Li, Huang Songling, Hu Bin, Huo Xueliang, Cao 200202 129368 Large-capacity insulated gate bipolar transistor driver circuit 20020 1233 127.9 Multi-channel portable magnetic leakage material flaw detector Li. Wang 2000065200000 103055.8 solar water pumping and lighting integrated application system Zhao, Meng Shuo, Yuan, 200001001510.5 AC asynchronous motors with variable frequency and speed regulation Zhao, Meng Shuo and Yuan Liqiang 200000.